# US 10,480,365 B2 · Fluid method and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,365 B2 - Document ID: US10480365B2 - Status: Granted - Kind: B2 - Application number: 15/762,445 - Filed: 2016-09-23 - Published: 2018-09-27 - Granted: 2019-11-19 - Earliest claimed: 2015-09-23 - Assignees: Castrol Limited - Applicants: Castrol Limited; Steven Paul Goodier; Oliver Paul Taylor; Michael Baker; John Gamston; Krishan Arora - Inventors: Steven Paul Goodier; Oliver Paul Taylor; Michael Baker; John Gamston; Krishan Arora - Web page: https://patentgrep.com/patent/US10480365B2 ## CPC - F01M 11/0458: {Lubricant filling and draining} - F01M 11/12: concerning lubricant level - F01M 13/04: having means for purifying air before leaving crankcase, e.g. removing oil - F01M 2011/0483: {with a lubricant cartridge for facilitating the change} - F01M 2013/0488: {with oil trap in the return conduit to the crankcase} - F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING ## Abstract A method for controlling fluid distribution in a fluid circulation system associated with an engine, the fluid circulation system being coupled to a replaceable fluid container comprising a fluid supply port configured to couple to a fluid supply line of the fluid circulation system, and a fluid return port configured to couple to a fluid return line of the fluid circulation system, and a breather port configured to couple to a breather output of the fluid circulation system, the method comprising causing the fluid to flow into the replaceable fluid container from the fluid circulation system while inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system, so as to collect the fluid in the replaceable fluid container, and related apparatus configured to control fluid distribution in a fluid circulation system associated with an engine, and causing a gas to flow from the replaceable fluid container through the breather port while inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system. ## Claims ### Claim 1 A method for controlling fluid distribution in a fluid circulation system associated with an engine, the fluid circulation system being coupled to a replaceable fluid container comprising: a fluid supply port configured to couple to a fluid supply line of the fluid circulation system, a fluid return port configured to couple to a fluid return line of the fluid circulation system, and a breather port configured to couple to a breather output of the fluid circulation system; the method comprising: causing the fluid to flow into the replaceable fluid container from the fluid circulation system whilst inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system, so as to collect the fluid in the replaceable fluid container, and causing a gas to flow from the replaceable fluid container through the breather port whilst inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system. ### Claim 2 (depends on 1) The method of claim 1, wherein inhibiting fluid outflow from the replaceable fluid container comprises: inhibiting fluid flow through the fluid supply port, comprising: blocking the fluid supply port and/or blocking the fluid supply line; and/or disabling a pump and/or a vacuum system causing the outflow through the fluid supply port and/or the fluid supply line; and/or controlling a fluid flow in the fluid circulation system to cause a fluid flow through the fluid return port to be greater than a fluid outflow through the fluid return port. ### Claim 3 (depends on 1, 2) The method of claim 1 or 2, further comprising: connecting the fluid supply line to a vent whilst inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system. ### Claim 4 (depends on 3) The method of claim 3, wherein the vent is provided on the fluid circulation system. ### Claim 5 (depends on 1) The method of claim 1, further comprising: maintaining open the breather port of the container. ### Claim 6 (depends on 1) The method of claim 1, further comprising: connecting the fluid supply line to the breather port and/or breather output. ### Claim 7 (depends on 1) The method of claim 1, wherein inhibiting the outflow comprises: inserting an insert interface between the container and the fluid circulation system, the insert interface being configured to: block the fluid supply port, and maintain open the fluid return port. ### Claim 8 (depends on 7) The method of claim 7 wherein the insert interface is further configured to: maintain open the breather port of the container. ### Claim 9 (depends on 7) The method of claim 7, wherein the insert interface is further configured to: connect the fluid supply line to a vent. ### Claim 10 (depends on 7) The method of claim 7, wherein the insert interface is further configured to: connect the fluid supply line to the breather port and/or breather output. ### Claim 11 (depends on 7) The method of claim 7, wherein the fluid circulation system comprises a dock configured to receive the replaceable fluid container, and wherein inserting the insert interface further comprises: inserting the insert interface in the dock. ### Claim 12 (depends on 1) The method of claim 1, wherein inhibiting the outflow comprises: closing a valve configured to block the fluid supply line and/or the fluid supply port. ### Claim 13 (depends on 12) The method of claim 12, wherein the valve is configured to be actuated by a user and/or an actuator controlled by a controller. ### Claim 14 (depends on 12) The method of claim 12, wherein the valve is located on the fluid supply line. ### Claim 15 (depends on 12) The method of claim 12, wherein the valve is further configured to: maintain open a connection between the fluid supply line and a vent. ### Claim 16 (depends on 1) The method of claim 1, wherein inhibiting the outflow comprises: coupling the fluid container with respect to the fluid circulation system or a dock configured to receive the replaceable fluid container, in a blocking spatial configuration different from a normal use spatial configuration, and wherein, in the blocking spatial configuration, the fluid supply port is spatially separated from the fluid supply line. ### Claim 17 (depends on 16) The method of claim 16, wherein coupling the fluid container with respect to the fluid circulation system or the dock in the blocking spatial configuration comprises changing the spatial orientation of the fluid container with respect to the fluid circulation system or the dock. ### Claim 18 (depends on 16) The method of claim 16, wherein, in the normal use spatial configuration: the fluid supply port is coupled to the fluid supply line and the fluid return port is coupled to the fluid return line; and wherein, in the blocking spatial configuration: the fluid supply port is coupled to the fluid return line of the fluid circulation system and the fluid return port is blocked. ### Claim 19 (depends on 18) The method of claim 18, wherein in the normal use spatial configuration: the breather port is coupled to the breather output; and wherein, in the blocking spatial configuration: the breather port is coupled to the fluid supply line of the fluid circulation system. ### Claim 20 (depends on 19) The method of claim 19, wherein, in the blocking spatial configuration: the breather output of the fluid circulation system is blocked. ### Claim 21 (depends on 1) The method of claim 1, wherein inhibiting the outflow comprises: coupling the fluid container with respect to the fluid circulation system in a blocking configuration, different from a normal use configuration, and wherein, in the blocking configuration, coupling between the fluid supply port and the fluid supply line is not made. ### Claim 22 (depends on 21) The method of claim 21, wherein at least one of the fluid supply port or the fluid supply line comprises: a coupling configured to be operated between a normal use configuration and a blocking configuration, and wherein, in the blocking configuration of the coupling, coupling between the fluid supply port and the fluid supply line is not made. ### Claim 23 (depends on 22) The method of claim 22, wherein the coupling comprises a cam configured to cooperate with a cam-engaging surface and/or a recess. ### Claim 24 (depends on 1) The method of claim 1, further comprising: receiving a signal indicating that a decoupling of the replaceable fluid container from the fluid circulation system is required, and in response to the received signal, causing the fluid to flow into the replaceable fluid container whilst inhibiting outflow of the fluid from the replaceable fluid container. ### Claim 25 (depends on 24) The method of claim 24, wherein the signal is further associated with a fluid change. ### Claim 26 (depends on 1) The method of claim 1, further comprising: receiving a signal associated with a stop of an operation of the engine associated with the fluid circulation system, and in response to the received signal, causing the fluid to flow into the replaceable fluid container whilst inhibiting outflow of the fluid from the replaceable fluid container. ### Claim 27 (depends on 1) The method of claim 1, wherein causing the fluid to flow into the replaceable fluid container comprises: pumping the fluid into the container using at least a pump and/or drawing the fluid into the container using a vacuum system. ### Claim 28 (depends on 27) The method of claim 27, wherein the pump and/or the vacuum system is configured to be powered and/or driven by the engine and/or an electrical power source. ### Claim 29 (depends on 28) The method of claim 28, wherein the pump and/or the vacuum system is powered and/or driven by a crankshaft of the engine. ### Claim 30 (depends on 28) The method of claim 28, wherein the electrical power source is associated with the engine. ### Claim 31 (depends on 28) The method of claim 28, wherein the electrical power source is external to a vehicle associated with the engine. ### Claim 32 (depends on 28) The method of claim 28, further comprising: cranking the engine or activating the electrical power source whilst not firing the engine. ### Claim 33 (depends on 1) The method of claim 1, further comprising measuring a fluid pressure in the fluid circulation system. ### Claim 34 (depends on 1) The method of claim 1, further comprising: receiving a level signal associated with the fluid being collected in the replaceable fluid container; and in response to the received level signal, removing the replaceable fluid container from the fluid circulation system. ### Claim 35 (depends on 1) The method of claim 1, wherein inhibiting fluid outflow from the replaceable fluid container comprises: controlling a fluid flow in the fluid circulation system to cause a fluid flow through the fluid return port to be greater than a fluid outflow through the fluid return port, comprising: cranking the engine whilst not firing the engine, to cause operation of a first pump and/or vacuum system to cause the fluid flow through the fluid return port into the replaceable fluid container, the cranking of the engine causing operation of a second pump and/or vacuum system to cause the fluid outflow through the return port out of the replaceable fluid container; wherein a ratio r of a volume of fluid caused to flow into the replaceable fluid container by the first pump and/or vacuum system on a volume caused to flow out of the replaceable fluid container by the second pump and/or vacuum system is such that: 2≤r≤10. ### Claim 36 (depends on 35) The method of claim 35, further comprising, prior to controlling the fluid flow in the fluid circulation system: operating the engine to a predetermined mode for a predetermined duration, prior to stopping the engine for a predetermined waiting duration. ### Claim 37 (depends on 35) The method of claim 35, wherein cranking the engine whilst not firing the engine comprises: select a specific mode on the vehicle; and cranking the engine whilst not firing the engine for at least one iteration, for a predetermined cranking period. ### Claim 38 (depends on 37) The method of claim 37, further comprising: interrupting the cranking for a predetermined waiting period between each iteration. ### Claim 39 (depends on 38) The method of claim 38, wherein the predetermined cranking period and/or the predetermined waiting period is of the order of the second. ### Claim 40 An apparatus configured to control fluid distribution in a fluid circulation system associated with an engine, the fluid circulation system being coupled to a replaceable fluid container comprising: a fluid supply port configured to couple to a fluid supply line of the fluid circulation system, a fluid return port configured to couple to a fluid return line of the fluid circulation system, and a breather port configured to couple to a breather output of the fluid circulation system; wherein the apparatus is configured to cause the fluid to flow into the replaceable fluid container from the fluid circulation system whilst inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system, so as to collect the fluid in the replaceable fluid container, and to cause a gas to flow from the replaceable fluid container through the breather port whilst inhibiting outflow of the fluid from the replaceable fluid container into the fluid circulation system.